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Engine-Codes – Generic – C0116

C0116 Code - Stop Light Switch Circuit Malfunction

Quick Answer

The C0116 code indicates a malfunction in the stop light switch circuit of the vehicle. Common causes include Faulty stop light switch, Wiring issues such as shorts or breaks in the circuit, Corrosion or poor connections in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C0116 indicates Stop Light Switch Circuit Malfunction.
Common causes
Common causes include Faulty stop light switch, Wiring issues such as shorts or breaks in the circuit, Corrosion or poor connections in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code C0116 Description

The C0116 code indicates a malfunction in the stop light switch circuit of the vehicle. This switch is responsible for activating the brake lights when the brake pedal is pressed. When this circuit malfunctions, it can lead to the brake lights not working properly, which is a safety concern as it can make it difficult for other drivers to know when the vehicle is stopping or slowing down. Additionally, it can also affect the operation of other vehicle systems that rely on the brake light signal, such as the cruise control or anti-lock braking system.

OBDII Code C0116 - Stop Light Switch Circuit Malfunction
C0116 Code - Stop Light Switch Circuit Malfunction

Common Causes of C0116

  1. Faulty stop light switch
  2. Wiring issues such as shorts or breaks in the circuit
  3. Corrosion or poor connections in the circuit
  4. Issues with the brake pedal position sensor
  5. Faulty body control module

Symptoms of C0116

  1. Brake lights not illuminating when the brake pedal is pressed
  2. Brake lights staying on continuously
  3. Inability to disengage the cruise control
  4. ABS warning light illuminated on the dashboard

How to Fix C0116

  1. Begin by locating the stop light switch, usually located near the brake pedal.
  2. Inspect the wiring and connections for any signs of damage, corrosion, or poor connections. Repair or replace as necessary.
  3. Test the stop light switch using a multimeter to check for continuity when the brake pedal is pressed. Replace if faulty.
  4. Reset any fault codes and test the brake lights to ensure they are functioning properly.
  5. If the issue persists, further diagnosis by a professional technician may be required to identify any underlying problems.

Cost to Fix C0116

The cost of repairing a stop light switch circuit malfunction can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the cost of parts for this repair can range from $50 to $150, while labor costs can range from $80 to $150 per hour. Overall, the total cost of this repair can range from $150 to $300 or more. It is recommended to consult with a trusted auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle.

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Code C0116 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0116 Code

1. What are the common symptoms of OBDII code C0116, Stop Light Switch Circuit Malfunction?

Common symptoms include the brake lights staying on or not working properly, the vehicle's cruise control not engaging, and the inability to shift out of park.

2. What are the potential causes of the C0116 OBDII code?

Possible causes of this code include a faulty stop light switch, damaged wiring or connectors in the circuit, a blown fuse, or a problem with the brake light relay.

3. How can I diagnose the Stop Light Switch Circuit Malfunction code?

You can diagnose this code by visually inspecting the stop light switch and its wiring, checking the fuse related to the brake lights, and using an OBDII scanner to read the code and monitor the switch's operation.

4. Can I drive my vehicle with the C0116 code present?

It is not recommended to drive with the C0116 code active, as it may affect the proper functioning of your brake lights and other safety features.

5. How can I repair the Stop Light Switch Circuit Malfunction code?

To repair this code, you may need to replace the faulty stop light switch, repair or replace damaged wiring or connectors, check and replace any blown fuses, or address any issues with the brake light relay.

6. Will resetting the OBDII code C0116 fix the issue?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the Stop Light Switch Circuit Malfunction.

7. How much does it cost to repair the C0116 OBDII code?

The cost of repairing this code can vary depending on the specific issue causing it, but it may range from a simple DIY fix to a more involved repair at a mechanic or dealership.

8. Can a malfunctioning stop light switch cause other problems in my vehicle?

Yes, a malfunctioning stop light switch can affect the operation of other systems like the cruise control and the ability to shift out of park, so it's important to address this issue promptly.

9. Is the C0116 OBDII code specific to certain vehicle makes and models?

While this code may be more common in certain vehicles, it can potentially occur in any vehicle equipped with an OBDII system and a malfunctioning stop light switch circuit.

10. How often should I check my stop light switch to prevent the C0116 code from appearing?

Regularly inspecting your stop light switch and its associated wiring for any signs of damage or wear can help prevent the occurrence of the C0116 code and ensure the proper functioning of your vehicle's brake lights.

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